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Upgraded Version The All-New Shallow Rim - M-i30AS

Experience the perfect blend of lightness and strength!
Crafted with T1100 & T700 + Toughened Resin
Weighs only 265g!
Available in 650B shallow version.

Learn More Buy it now

New Enduro/Downhill Carbon Wheelset

WM-i32AE: Built for the extremes, effortlessly tackling every bump in Enduro and DH, unleash your riding passion!

Wheel test video Buy it now

WHY BTLOS

Today, there are many choices in carbon rim manufacturing. Some manufacturers build quality products, some manufacturers provide excellent service and some offer incredible pricing.

We founded BTLOS on the belief that you should not be forced to choose quality, service or price; you should receive world-class quality, and competitive prices backed up by outstanding service and support for every product on every order.

It is our passion and our mission.

Technologies

Fiber-Continuous Spoke Hole Design

Traditional carbon rims often require post-production drilling for spoke holes, which can compromise fiber continuity and create stress concentration areas.
Fiber-Continuous Spoke Hole Design, reinforced during the layup stage for continuous fiber alignment and even stress distribution.

Coating Free

This is BTLOS' most advanced manufacturing process. Due to high-quality carbon fiber and specially formulated epoxy (resin) along with state-of-the-art molding and manufacturing techniques, BTLOS rims come out of the mold without blemishes or defects in their finish eliminating the need for painting and/or clear coating and also saving weight.
USED FOR: Premium Series

Smooth Inside Wall

The traditional inflatable bladders used by many manufacturers to maintain the rim's shape during the molding process lack the ability to closely control the final shape of the rim. As a result, although most carbon rims appear smooth and seamless on the outside, they are marked by irregularities and weaknesses on the inner surface of the rim. Each irregularity is a potential point of failure.
Using a molding process we call ''SLW'', BTLOS employs proprietary high-pressure bladders and specific solid silicone forms to tightly control rim shape, producing virtually void-free rims with perfectly smooth walls (inside and out) resulting in finished rims that are truer, lighter, stronger, more durable rims and wheels.
USED FOR: Premium Series

Spoke Hole Angles

BTLOS can drill spoke hole angles to match or compliment the spoke angles created by the hub flange (as provided by the customer). Matching the spoke hole drilling angle in the rim to the spoke angle of the hub/hub flange allows the nipple to be better aligned with the spoke when the wheel is tensioned resulting in fewer broken spokes and nipples.
USED FOR: Premium Series / Standard Series

Graphene Special Braking Surface

By incorporating graphene into our design we are able to increase braking power by 50% in all conditions while limiting heat build-up to less than 150 degrees. These improvements lead to a more durable, stronger brake track along with improved braking performance in wet conditions and during long descents. Our new brake track can also include a patterned surface specific to customer requirements or specifications. (OEM service available). Learn More
USED FOR: Premium Series

Super High TG Braking Surface

Extremely high heat resistance at the brake, testing TG values up to 250 degrees at 100pis test conditions. Ordinary rim TG can only reach 180 degrees.
USED FOR: Premium Series / Standard Series

LEARN MORE

Hub Brand Partners

OUR LATEST NEWS

Recent US Tariff Changes and Our Commitment to You

29/04/2025

As the administration continues to implement new trade policies, U.S. tariffs on certain imported goods, including bicycle-related products, have been steadily increasing. This has led many American consumers to become more cautious about purchasing international products, worrying about the additional costs brought on by higher tariffs.

BTLOS Hubs: The Perfect Combination of High Performance and Exceptional Value

27/12/2024

BTLOS hubs are produced by a well-known hub factory in the industry, which has been manufacturing for multiple major brands for years. This factory boasts a mature technical system and strict quality control processes. BTLOS leverages these advanced technologies and exquisite craftsmanship, passing them directly to consumers. By reducing brand premiums, BTLOS is able to invest more in product research and development, providing consumers with a high-performance option at a more cost-effective price.

DT Swiss 240 DEG 30th Anniversary Silver Hubs, Now Available in BTLOS Custom Builds!

29/11/2024

As a leader in the cycling components industry, DT Swiss has introduced the all-new 240 DEG hubs, featuring the innovative Ratchet DEG system. Known for its exceptional durability and efficient power transfer, this hub has become the top choice for cycling enthusiasts and professional riders alike. Now, BTLOS offers you the opportunity to build a custom wheelset based on this top-tier hub, delivering an unparalleled riding experience.